Drain conduit



Nov. 30 1926. i

T. P. LAMPE DRAIN CONDUIT Filed June 16, 1925 6 f 7 jl- J y F194 J wINVENTOR.. 16

Patented Nov. 30, 1926.

UNlTED STATES THORVVALD PETER LAMPE, OF BALTIMORE, MARYLAND.

DRAIN CONDUIT.

Application filed June 16, 1925. Serial No. 37,590.

My invention relates to a conduit to be used in sub-surface irrigationor in subsurface drainage and has for its object. to provide tiles forthis conduit of such design that the iiow of water into or out of theconduit along its length is a maximum.

With these and other objects in view, the present invention consists inthe combination and arrangement of parts, as will be hereinafter fullydescribed, shown in the accompanying drawings, and distinctly pointedout in the claims, it being understood that changes in the form,proportion and minor details may be made within the scope 0f the claims.

In the accompanying drawings, Fig. 1 is a plan view of the bottom ortrough tile, Fig. 2 is a perspective of the assembled conduit with partsbroken away, Fig. 3 is a cross section of the assembled conduit, Fig. 4is a side view of the bottom or trough tile, Fig. 5 is a cross sectionof Fig. 4 along the line v -m, and Fig. 6 is a perspective showing theinside of the cover tile.

Like characters of reference designate corresponding parts in each andevery figure of the drawing.

As shown in the drawing, the invention consists of a bottom or troughtile 1 and a cover tile 11.

The bottom or trough tile 1 is substantially a rectangular block. Atrough or gutter 2, of semi-circular or other suitable crosssection, isformed longitudinally of and in the upper surface of the tile 1.Crosschannels 4 are cut through the side walls of the gutter 2 andtransversely to the longitudinal axis thereof. The cross-channels 4 arecut to the bottom of the trough at its center and below the bottom ofthe trough in the outer side walls, as is clearly shown in Figs. 1 and5. As shown in Fig. 5, the cross channels 4 are formed with a curvedbottom 3, the curve 3 being reverse to and substantially tangent to thecurve of the trough 2 at its lowest point. The curves of the bottom 3and the gutter 2 are symmetrical with relation to each other and to thelongitudinal edges of the tile 1.

The upper surfaces 15 of the side walls of the trough 2 are planesurfaces of suiiicient width to constitute good bearing surfaces.

Formed on the sides of the tile 1 are lugs 5 having portions 6 and 7.The under side of the tile 1 and lugs 5 are continuous. The

end surfaces of the tile 1 are also continued into one edge of each ofthe lugs 5. The portions 7 of the lugs 5 form spacing or abutting blocksfor the cover tile 11 when in assembled position as shown in Figs. 2 and3 of the drawing.

' The portions 6 of the lugs 5 extend beyond the portions 7 by an amountequal to the thickness of the cover tile 11. For each size of conduit,each part of the lug 5 will be of standard dimensions.

When the parts of the conduit are assembled, the lug portions 6 of twocontacting trough tiles are engaged by or included in the notch 16 ofthe cover tile described below, and by this arrangement, the tiles ofthe conduit are held against endwise slipping and separation.

The cover tile 11 is of a semi-circular or other suitable cross-sectionand of such dimensions that it lits down over and includes the bottomtile, while the lower edges `12 of the cover tile and the under surface13 of the bottom tile are substantially in the same horizontal planewhen the conduit is assembled. Formed longitudinally of and on the innerside of the cover tile 11-and suitably arranged and dimensioned toengage the surfaces 15 of the trough tile 1 in the manner illustratedclearly in Fig. 3 of the drawing are two shoulders 14 which are in aplane parallel to the plane defined by the lower edges 12 of the covertile.

The shoulders 14 are for the purpose of supporting the cover tile on thetop portions 15 of the trough tile. Formed in each bottom edge of thecover tile and substantially in the middle of its length are notches 16of a length equal to twice the width of the lug portions 6 of the troughtile 1 and of suicient depth to clear the lugs vertically when the covertile is in place.

l/Vhen laying the conduit, the bottom tiles are iirst laid end to end onthe bottom of the trench so that the trough or gutter formed is ofcontinuous and even slope; then the cover tile is put in place, theshoulders 14 resting on the portions 15 of the gutter 10, the innerbottom sides of the cover tile in loose contact with the portions 7 ofthe bottom tile and the notch 16 of the cover tile engaging andincluding two lugs 6 of the bottom tile and on each side thereof.

As a result of this arrangement, a passageway 17 is insured between thebottom tile and cover tile into which the cross-channels 4 open7 thetiles are locked together into a continuous conduit, the dierent tilesbeing mutually supported, the drainage Water or Waste Water is insured apassage into or out of the conduit at practically any point alongv itslength, and the trough 2 is kept clear of any debris that might beinclined to enter the said trough. Y

I intend to make these tiles of concrete, glazed 'or unglazed terracotta, or any other suitable material. Y

This conduit is particularly adapted for the dispersion of the overflowWater from septic tanks or any other Waste Water to the subsoil. TheWater entering this conduit from the Waste pipe flows down the conduitand out through the slots i into the soil. When the soil at the upperend of the conduit becomes saturated, the Water will run further alongthe conduit and, during times of minimum or no flow, the Water insections of the subsoil already saturated Will return to the. conduitand continue down the conduit to dryer portions ofr the subsoil.

Havingy described the invention, What I cla-im is;

l. In a drain conduit, a cover tile, a trough tile, sail trough tilehaving side Walls and cross-channels through said side Walls, the saidtrough tile having a trough in its upper surface of substantiallysemi-circular cross-section, the bottom of said cross-channels being acurve exteriorly tangent to the curve of said trough.

2. In adrain conduit, a cover tile, a trough tile, said trough tilehaving side Walls and cross-channelsthrough lsaid side Walls, the saidtrough tile having a trough in its upper surfacev of substantiallyYsemi-circular cross-section,the bottom of said cross-channels being acurve exteriorly tangent to the4 cut in its lower edge, said cover tileinclud` ing the said rough tile, the said notches including the. saidlocking lugs.

4i. In a drain conduit,` a cover tileand a trough tile,A said troughtile.y having a gutter longitudinally thereof and cross-channelstransversely to the said gutten, the said con-V duit havin@ apassageway-between the `cover tile and the trough tile and oneither sidethereof substantiallythe ,full length thereof, the said cross-channelsbeing deeper aty the ends than at the center and opening into the. saidpassageway', the said cover tile havingy bearing shoulders, thesaidtrough tile having loclnng lugs and bearing lugs.

In a drain conduit, a trough tile and a cover tile, the trough tilehaving side Walls' spacing lugs and locking lugs, the' cover til-e.having bearing shoulders on the'inner side.

thereof and bottoni edges, theI bottom edges having notches therein,theA bearing shoulders of the cover tile resting on the topf of theWalls of the trough tileythe .spacing lugs of the trough tile: .engagingthe inner SFI sides of the cover tile and the lockingr'lulgs l of thetrough tile being included bythe notches in the bottom edge of the covertile.

In testimony whereof I aftxiny signa.v

ture.

THORVVALI) LAMPE..

